Vehicle-seat



(No Model.)

` T. J. KERSTBTTER.

VEHICLE SEAT. No. 429,533. Patented June 3, 1890.

.7i f; 5M E A TTOHNE YS ma nanars persas co.. mom-uma., wAsHlNufoN, u.c.

UNITED STATES PATENT Griffon.

THOMAS J. KERSTETTER, OF FERN, PENNSYLVANIA.

VEHICLE-SEAT.

SPECIFICATION forming part of Letters Patent No. 429,533, dated June 3,1890. Application filed October 17, 1889. Serial No. 327.360. (Nomodel.)

seeking, am ong other objects, to provide a siniple convenientconstruction whereby the back bar of a vehicle-seat can be held indifferent positions andcan yield with a spring action,

rendering riding more easy and comfortable.l

The invention consists in certain novel constructions and combinationsof parts, as will be hereinafter described and-claimed.

In the drawings, Figure l is a side view of a seat provided with myimprovements. Fig. 2 is a detail perspective View. Fig. 3 is a sectionalview enlarged on about line 3 3, Fig. l. Fig. 4 is a bottom plan view ofthe improvement, and Fig. 5 is a side view showing'the slidingframe-section in a different position from that shown in Fig. l.

The seat A and back bar B may be of any suitable construction, and maybe upholstered or cushioned, if desired, in any suitable manner. Theback bar B is supported on springarms C, which by preference are formedof rods of spring metal having upright portions D, base portions E, andcoiled or looped at F at the juncture of such parts, the coil or loopbeing preferred, because it gives greater elasticity or spring to thearm, and the base portions E being provided to facilitate theapplication of the spring-arms to the seat in the manner presentlydescribed. j

In securing the arms C to the seat I employ a holding-frame andadjustable securing devices by which the spring-arms may be held atdifferent angles to throw the back bar forward and hold the driverupright, or to set such bar back, so as to form what may be called alazy-back, as will be understood from the drawings.

It is preferred to make the holding-frame G of two sections H I, and toconstruct the same as will be more fully described.

In use the section H, which is a xedsection, is secured to the underside of the seat. I provide this section H at its rear end with anopening h, forming a bearing for the base portion of the spring-arm. Ialso make the section Hwith guides h for the movable section I, which isheld in said guides and may be moved back and forth, a clamp c',consisting of a screw, being arranged to clamp the section I to sectionH and hold such section I in any of its positions. This section I isprovided with a slotted segment I,with which the screw c" co-operates toclamp the forward end of the base portion of the spring-arm in anydesired vertical adjustment.

To prevent the seat-back from falling back and injuring the rider incase the bow or coil of the spring-arms should break, I provide asafety-stop arranged for engagement by the said arms should suchcontingency arise, and limit their rearward movement. In theconstruction as shown and as is preferred, the safety-stop is an uprightarml2 on the rear end of the section IV of the holding-frame, having atits upper end aseat-like portion cl2,

to receive the upright portion of the springarms when it moves to therear of its normal positions.

In operation the base portions of the springarms are passed through thebearings in the xed holding-sections forward to the slotted segment ofthe movable frame-section I, and are secured thereto by the clamp. Byadj usting such forward ends of the base portions of the arms up or downit will be seen that the angle of the upright portions of the said armsmay be varied, and by adjusting the sliding section of the holding-frameback or forth I am able to set the back bar back and forth, so that itmay be arranged, if desired, at about the same point, whether theupright portions of the spring-arms are vertical or inclined in eitherdirection.

Having thus described my invention, what IOO ing and clamp devices, bywhich the arms may be adjusted pivotally on said fulcrum and bearing andsecured in their' different adjustment, substantially as set forth.

3. The improvement in seats, con'lprising the holding-frame having abearing for the spring-arm and provided in advance thereof with theclamp, and the spring-arm engaging said bearing and arranged to beengaged by said clamp, substantially as described.

4. In a seat, substantially as described, in combination with the armsfor supporting the seat-back, a holding-frame provided with devices forsecuring such arms and for adj usting the same to different angles,substantially as set forth.

5. The improvement in seats herein described, comprising theholding-frame having a slotted segment and provided in rear thereof witha bearing for the spring-arm, the spring -arm engaging said bearing, anda clamping-screw connecting the said springarln With the segment of theholding-frame, substantially as set forth.

6. In a seat, the co1nbination,with the seatarm, of the holding-frameprovided with a clamp whereby the arm may be held in differentadjustments, and having a section movable back and forth, whereby theback bar may be set back or forward in the different adjustments of thespring-arms, substantially as set forth. v

7. In a seat, the co1nbination,with the back bar and the arms forsupporting the same, of the securing or clamp devices for said arms, andthe safety-stop whereby to engage said arms above its clamp devices andlimit its movement in case of breakage, substantially as set forth.

8. In a seat, the combination of the holding-frame having a fixedsection provided With a bearing for the spring-arm and with guides forthe movable section, the movable section held in said guides, the clampfor secu ring said movable section in its different positions, thespring-arm, and the clamp for securing said arm, substantially as setforth.

9. As an improvement in seats, theholdingframe consisting of a fixedsection provided with a bearing for the seat-arms, and the movableframe-section having a slotted segment and provided at its rear end withthe safetystop, substantially as set forth.

l0. The combination, with the seat, of the holding-frame secured to saidseat and provided With adjustable securing devices for the spring-arms,and the spring-arms, substantially as set forth.

ll. The improvement in seats herein 'described, consisting of theholding-frame having afixed section provided with a bearing for thespring-arm and with guides for the movable section, the movable sectionprovided at its front end with a slotted segment and at its rear endwith the safety-stop, the spring-arm having a coil or loop and engagingthe bearing of the fixed frame-section, and the clam p-screvv securingsuch sp rin g-arm to the slotted segment of the movable framesection,substantially as set forth.

12. In an improved seat, the' combination of the back-bar-supportingarms having upright and base portions,a bearing for the rear end of thebase portion, and adjustable securing devices, whereby its forward endmay be held in different vertical adjustments, substantially as setforth.

f1.3. The combination, substantially as described, of the seat, the backbar, the holding-frames secured to the seat and provided With clampdevices, and the arms supporting the back bar and held by the clampdevices of the holding-frame, substantially as set forth.

THOMAS J. KERS"ETTER. Vsftnesses:

G. G. SHOEMAKER, G. M. CUsHING.

